"Two and a Half Men" actor opens up to Ellen DeGeneres about marriage and fatherhood

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It took a "ninja effort" to pull Ashton Kutcher and Mila Kunis' wedding off.

The 38-year-old "Two and a Half Men" star stopped by "The Ellen DeGeneres Show" Wednesday, where he recalled the various lengths he went to in an effort to keep his July 2015 nuptials as private as possible. "That was sneaky," host Ellen DeGeneres, 58, told her guest. "You got married, and every time you've been here or Mila's been here, you've been really cagey about the whole thing. And then you went and got married without any of us being invited!"

Kutcher explained that he and Kunis were concerned about helicopters trying to snap pictures of their intimate ceremony, which would've ruined the atmosphere. "It's a legitimate concern," he said. To throw paparazzi off their trail, he said, "I was, like, posting things on social media that were in different locations to avoid that, because we didn't want to be screaming our vows at each other and be like, 'Forever! 'Did you say never?' We didn't want to do that thing, so we went really under the radar with it."

In addition to talking about his summer wedding, Ashton also gave an update on his 17-month-old daughter, Wyatt Kutcher. "She loves dancing. She's down with dancing. I mean, if I sing 'The Wheels on the Bus Go Round and Round,' she loses it. That's her thing. She just loves it when the wheels go round. We go to the playground and she gets on the little steering wheel on the playground thing, and the wheels go round. She gets excited," the actor said, adding that she has "mostly one move" down pat. "She likes to 'Whip and Nae Nae,' too. I think she thinks she's doing it, because it's whippin' and whippin' and nae-nae-ing. Mama taught her that."